Run results for: loops_and_stuff

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.92 Safari/537.36

Browser: Chrome 69

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
while loop	59598.0 Ops/sec
uncached length	43029.0 Ops/sec
cached length postfix	59822.3 Ops/sec
cached length prefix	60395.6 Ops/sec

Script Preparation code:

var arr = [1, 2, 4 , 5, 66, 38, 39, 3993, 33, "test", "hello", 93, 93, 20, 77, "hu", 92, 18, 4 , 5, 66, 38, 39, 3993, 33, "test", "hello", 93, 93, 20, 77, "hu", 92, 18, 4 , 5, 66, 38, 39, 3993, 33, "test", "hello", 93, 93, 20, 77, "hu", 92, 18, 4 , 5, 66, 38, 39, 3993, 33, "test", "hello", 93, 93, 20, 77, "hu", 92, 18, 4 , 5, 66, 38, 39, 3993, 33, "test", "hello", 93, 93, 20, 77, "hu", 92, 18, 4 , 5, 66, 38, 39, 3993, 33, "test", "hello", 93, 93, 20, 77, "hu", 92, 18];
var tmp;

Tests:

while loop
var len = arr.length; while(len--) { tmp = arr[len]; }
uncached length
for (let i = 0; i < arr.length; i++) { tmp = arr[i]; }
cached length postfix
for (let i = 0, len = arr.length; i < len; i++) { tmp = arr[i]; }
cached length prefix
for (let i = 0, len = arr.length; i < len; ++i) { tmp = arr[i]; }

Run results for: loops_and_stuff

while loop

uncached length

cached length postfix

cached length prefix